ci(gitflow): enforce branch and PR governance checks

.gitea/scripts/check-pr-todo-reference.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env sh
+set -eu
+
+body="${1:-}"
+
+if [ -z "$body" ]; then
+  echo "PR body is empty."
+  exit 1
+fi
+
+if printf "%s" "$body" | grep -Eq 'TODO|todo|\[P[1-3]\]'; then
+  echo "PR body includes TODO reference."
+  exit 0
+fi
+
+echo "PR body must reference the related TODO item."
+exit 1